You really think 90% could be pranks? Anything could potentially be a prank, that doesn't change the fact someone could be in imminent danger. Police need to always both exercise caution and respond quickly to potential crimes.

I'd recommend reading mcherm's comment again. He doesn't state that 90% could be pranks. He states "If, for instance, I were to learn that 90% ..." This is called "reductio ad absurdum", and is a pretty standard method of arguments. The statement from x86_64Ubuntu was that a report of violence in all cases is responded to by a SWAT team, with the implication that this is correct and reasonable behavior in all circumstances.

From my reading, mcherm is giving a hypothetical scenario in which the automatic response of sending a SWAT team would be unreasonable. The conclusion isn't that we exist in that hypothetical scenario, but that more information is needed in order to determine whether and how close we may be to it.

Yes but the reasonableness of that hypothetical can still be challenged. This isn't a math proof, but a discussion of the reasonableness of a policy.

Correct, and the hypothetical establishes that the proportion of maliciously false calls is essential for determining the reasonableness of the policy. At 0% maliciously false calls, reasonable. At 90% maliciously false calls, unreasonable. Clearly, that number is important to the discussion, which is the sole point of introducing the hypothetical.

This is a repeat of the same argument. An unrealistic hypothetical does not establish that we need to consider something in the real world. Hypothetically perhaps UFO's were beaming ideas into the cops' heads, hence we cannot trust their statements and need an alternative data source. Nope, this is preposterous so we can go ahead and not worry about concerns based solely on this argument.

Thank you for explaining this so clearly.

There’s no winning for the cops.

It’s a really hard job where you have to walk the correct route through a protocol in an emergency, often while being in danger yourself

They could win a lot more by being smarter. Their tactics are terrible. A lot of crime could be (and is) de-escalated without the police there. They can be better trained and informed to deal with different scenarios without pulling their weapon, shouting commands, etc. They can have a better relationship in their communities. There's a lot of evidence that alternative methods result in less harm.

The "protocol" for police is also dictated by their unions and the way laws around police use of force are interpreted. In general they know they are safe if they simply kill a person as soon as they perceive a threat. They will be legally covered and physically out of harm's way. This therefore incentivizes them to use lethal force, because they have no incentive not to use lethal force.

Yes, police have a hard job. But it could be a lot less hard (for them) if laws and policies are reformed.

Crazy that this is being downvoted. The cops were responding to a call about a armed gunman actively killing. If they respond slowly or tepidly and people die, then they get yelled at. If they respond quickly and decisevly and they have been lied to, they get yelled at. They are not omnipotent.

What percentage of alerts triggered by home security systems are false alarms? I don't have authoritative numbers, but I kind of thought "everybody knows" it's most of them.

I'm not arguing for 90%, just against assumptions.